Rai-Radio Televisione Italiana

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5006929 Method for encoding and transmitting video signals as overall motion vectors and local motion vectorsExpiredMar 06, 90Apr 09, 91[H04N]
5006930 Device for reducing the redundancy in blocks of digital video data in DCT encodingExpiredMar 06, 90Apr 09, 91[H04N]
5005076 DCT video signal compression device with intrafield/interfield switching and adjustable high frequency filterExpiredMar 06, 90Apr 02, 91[H04N]
4931855 Method for generating and transmitting high-definition color television signals, compatible with current standards and process and apparatus for receiving said signalsExpiredJul 06, 88Jun 05, 90[H04N]
4887269 Apparatus for the reception of radio broadcasted digital signalsExpiredDec 02, 87Dec 12, 89[G06F]
4689661 Method of simultaneously transmitting a plurality of television signals on a single radio link and apparatus adapted to carry out said methodExpiredJun 22, 81Aug 25, 87[H04N]
4620218 Method of transmitting and receiving color television signals on two channels for broadcasting from satellite and apparatus for carrying out said methodExpiredJul 01, 83Oct 28, 86[H04N]

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